Insulating device



FIG. 1 is a top, front, left perspective view of an insulating device showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The dot-dash lines represent unclaimed boundaries. The zig-zag broken lines represent zipper teeth and form no part of the claimed design. The even-length broken lines form no part of the claimed design. 

CLAIM The ornamental design for an insulating device, as shown and described. 